What is CVE-2021-43105?

CVE-2021-43105 is a medium-severity vulnerability in Technitium Dns_server. CVSS score: 4.3/10. Published 2022-03-28.

How severe is CVE-2021-43105?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Technitium Dns_server

CVE-2021-43105

A vulnerability in the bailiwick checking function in Technitium DNS Server <= v7.0 exists that allows specific malicious users to inject `NS` records of any domain (even TLDs) into the cache and conduct a DNS cache poisoning attack.

EPSS: 0.006 (44.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Technitium Dns_server
N/a — versions n/a

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2021-43105?: CVE-2021-43105 is a medium-severity vulnerability in Technitium Dns_server. CVSS score: 4.3/10. Published 2022-03-28.
How severe is CVE-2021-43105?: Medium severity. CVSS v3 base score is 4.3 out of 10.